The folks at XDA Developers have found the "fix" to get the assisted GPS (or aGPS) working properly on the XV6800. Get to this fix by going here
It's great to get an instant GPS lock now. In the past, it may have taken up to a few minutes to get a GPS lock. Now, it's practically instant. This is because the GPS lock is assisted by location data collected through the phone's data network. So even if the sky is cloudy, you'll get a fast GPS lock using the "fixed" assisted GPS chip on the XV6800.